Strap for Saint-Imier Date 30 Two Tone

The lug width of the Longines Saint-Imier L2.563.5.79.0 is 15mm. This measurement is the distance between the inner holes where the spring bar passes to attach the strap to the case. It is measured with a digital calliper positioned perpendicular to the lugs. This is a rare measurement in the classic watch market, making this model particularly suitable for slender wrists or those preferring elegant, slender proportions.

Natural alligator leather is the most authentic choice for the Saint-Imier L2.563.5.79.0. Its regular grain structure will never compete with the delicate proportions of the 30mm case; rather, it enhances them. Italian vegetable-tanned calf leather is the second excellent option, particularly appreciated for developing a natural patina over time. Both materials maintain the aesthetic balance that such a classically proportioned watch demands.

Strap replacement is performed using a specific tool, the spring bar tool (two-pronged screwdriver). Position yourself facing good light. Insert one prong of the tool into the small hole beneath the lug and gently push upward to compress the internal spring, then extract the pin. Repeat on the opposite side. Insert the new strap, aligning the holes with the pins, and press gently until you hear the click of engagement. Verify that the strap is secured uniformly on both sides.

Any strap with a 15mm lug width is compatible with the Saint-Imier L2.563.5.79.0. On milanostraps.it you will find a dedicated collection of artisanal straps in alligator, calf leather and other materials, all customizable in size, initials and stitching thread colour. Milan Straps are crafted for longevity and maintain quality standards superior to generic market offerings.

A quality leather strap (alligator or calf) typically lasts between 3 and 5 years of daily use, with variability depending on climate, perspiration and care. Alligator tends to last longer due to the skin's structure. Vegetable-tanned calf ages better aesthetically, developing patina, but requires minimal maintenance: avoid prolonged water contact, do not expose to direct sunlight for extended periods, and if necessary, clean with a soft, slightly damp cloth. Casati Milano straps carry an 18-month manufacturing defect warranty.